Feder Universal & Co.

• place Sofia, 24 Kamen Andreev Str. Office 108
• public http://www.feder-u.com/en/

Baldim Federn

• place Apriltsi, Stara Planina Str. 57
• public http://baldim-federn.com/

Hotel Armira

• place Stara Zagora Mineral Baths, Stara Zagora Mineral Baths
• public http://www.armirahotel.com/index-english.html

Варианти ООД

• place Стара Загора, кв. Индустриален, ул. Пружинна 6
• public http://www.varianti-springs.com/bg/

ЗАВОД ЗА ПРУЖИНИ

• place с. Крън, община Казанлък
• public https://onlinebulgaria.wixsite.com/zavod-za-prujini